[merlehaggard]

They dampen the effects and quell the anxiety, and depending on what stage of the trip you're in and how hard you're tripping they may effectively kill it entirely. I would take a bit of valium on the tail end of a trip to sleep or quiet my brain as it reconstituted itself after being atomized into the cosmos. I only took benzos once during the upward trajectory of a trip near the peak, after suffering physical panic symptoms from a strong batch of wild-picked wavy caps (first and only time I've felt physically threatened by a psychedelic). It didn't kill the trip, but it killed the panic and allowed me to enjoy the experience.